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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-54006] Make listCollections iterate through in-memory state to collect collection information rather than on-disk</title>
                <link>https://jira.mongodb.org/browse/SERVER-54006</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently listCollections does a query on the durable catalog. It would be faster and simpler to iterate through the CollectionCatalog.&lt;/p&gt;

&lt;p&gt;It is thought that the durable read was required in order to support the mmap storage engine, which is no longer supported as of v4.0.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1599088">SERVER-54006</key>
            <summary>Make listCollections iterate through in-memory state to collect collection information rather than on-disk</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13203">Gone away</resolution>
                                        <assignee username="erin.liang@mongodb.com">Erin Liang</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>neweng</label>
                            <label>newgrad</label>
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                <created>Mon, 25 Jan 2021 03:13:17 +0000</created>
                <updated>Fri, 27 Oct 2023 20:46:14 +0000</updated>
                            <resolved>Wed, 7 Jun 2023 03:30:59 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5480026" author="gregory.wlodarek" created="Wed, 7 Jun 2023 03:30:59 +0000"  >&lt;p&gt;Durable catalog read was removed in &lt;a href=&quot;https://github.com/mongodb/mongo/commit/11de948b0c50df7d12de09ae0f01e791fc5d70d7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/11de948b0c50df7d12de09ae0f01e791fc5d70d7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3579649" author="dianna.hohensee" created="Mon, 25 Jan 2021 03:15:30 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53829&quot; title=&quot;Make listCollections and listIndexes commands lock free&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53829&quot;&gt;&lt;del&gt;SERVER-53829&lt;/del&gt;&lt;/a&gt; puts in some extra lock infrastructure in order to support reading from a storage snapshot without coll/db locks. That lock infrastructure will no longer be needed once we only read from memory: it would be great to remove it with this work.&lt;/p&gt;</comment>
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